Ultimately, yes. But Sarah Binder and others, who know this stuff at a level of detail that I don't, would (I believe) argue it's more tricky than it might seem. Reid used a ruling of the chair; it's not clear (I think?) that the same thing could necessarily work for post-cloture time.

Getting away from rules details...I think the bottom line winds up being that if the minority party really insisted on all possible ways of obstructing, the majority party would eventually act. If not, they likely wouldn't.